Apparatus for extracting grease and oils.



o. EKDGBRTON. APPARATUS FOB, EXTRAGTING GREASE AND OILS..

APPLICATION FILED JAN. 25, 1911.

Patented May 9, 1911.l

2 SHEETS-SHEET l.

I m m. v ,f C 4 1 ...um fm n :T a z y C. EDG-BETON. vILPPARATUS FOR EXTRACI'ING GREASE AND OILS. AT'PLUATIONIILBD 51111.25, 1911'.

Patented May 9, 1911.

2 SHEETS-SHEET 2.

i UNITED sTATEs PATENT oFFicE.

CHARLES EDGERTON, OF PHILADELPHIA, PENNSYLVANIA.

To all wwm 'it/may concern:

`APPARATUS FOR EXTRACTING GREASE AND OILS.

Be it known that I, CHARLES EDGERTON, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Extracting Grease and Oils, of-

whichthe following is a specification.

My inventionrelates to thatoclass of apr paratus` used for extracting grease and oils from semi-solid materials and more especially` forl extracting grease and oils` from tankage, garbage and other products containing a percentage of grease, by the agency of some solvent such as naphtha. The known construction ofsuch apparatus embodies an'outer cylindrical shell or container, an inner perforated lining, openings for in-` troducing the charge, pipes for introducing the solvent and drawing oli' the greas'eand oils and means for discharging the more or less solid residuum after the Aoil and grease have beenextracted.

My xinvention consists in the novel construction and arrangement of the parts of the apparatus for facilitatingand expediting these operations and for securing a very thorough extraction of the grease and oil and the convenient discharge anddisposition of the solid re'siduum, as hereinafter fully described with reference to the drawing in which:

Figure 1. is a vertical sectional elevation of the apparatus. Fig. 2. is a sideI elevation of the lowenportion ofthe apparatus, the view Asa .one half of the cylinder on line 3 3 of Fig.

2.,the other half being the same. Fig. 4. is a sectional detail'of the slip joint of the sec tions of the inner perforatedlining. Fig. 5. is a sectional detail of the adjusting mechanism for projecting the lower end ofthe perforated lining inwardly and drawing 'it out again, priorto discharging the contents of the cylinder and, Fig. 6 is 'a sectional .detail of the connection for the drainage pipe.

' In the drawing, Fig. l. A represents an outer cylindrical shell of'platey metal, Ato which near the middle are riveted brackets C that rest upon and are supported by a rectangular metal fra-me D, Fig. 2; which holds the cylinder in elevatedA position with its lowertend a considerable distance above the floor or ground suiicient to permita carI, withwheels al runin on rails 1' to ru-n to a position either imme lately below the cylin-l Specicatibn of Letters Patent.

provided a charging inlet B having a suitable doorvcapable of being sealed air tight, through which the material to be treated is inserted. In vert-ical posit-ion in the center of the cylinder is xed a large perforated pipe F which extends through the top of the cylinder and opens into the bottom of the same.

E is a perforated inner lining of sheet metal forming a strainer. This is riveted or bolted at its upper end to the main cylinder A through an interposed rib a that rigidly holds the top of the perforateddiningsome distance away from the outer shell with an annular space between the two. This innenperforated lining is made in four quadrantal sections, see Fig. 3. These sections are each reinforced by horizontal quadrantal ribs e which areattached to the lining but have no connection with the outer shell. Opposite the ribs-e and also atthe upper end the lining is not perforated, as seen in Figs. "l and 3. The -quadrantal'sections of the inner perforated lining are connected along their vertical meeting edges by slip joint connections that permit the inner lining at its lower edge to be projected inwardly to a reduced circumference, as seen in dot-ted lines in Figs. l and 3, for the purpose hereafter described., This slip joint connection is shown in detail in Fig. 4, in which 'g g are two parallel plates riveted to one vertical edge of one quadrantal section by rivets kfL and embrace between them the other vertical edge of the adjacent quadrantal section, so as to allow the lining se'ctions to slip in their own planes to or from each other to accommodate the variation in Patented May '9, 1911. Application fue@ January 25,1911. serial Np.6o4,e49.

their circumferential dimension 'in their -adjustment inwardly and outwardly.

l For projecting the perforated lining inwardly and. drawing it out again, adjusting screws with hand wheels L are employed vnearthe bottom of. the cylinder -as steen .in Figs 2 and 3.' This. adjustingdev lce, of

which there-is one lfor each lining section, is shown in detail in Fig. 5, -in which Lis a handwheel having la screwl shank m that passes through a stuting box s and whose thread engages a thread on the 'interior'.of a gland casting l -riveted to the outside of the shell. The inner end of the screw shank has two washersa and o which fit on opposite sides of the Arib e and the attached inner lining, the inner washer 'n being held on by a pin p. This endof the screw shank, with its washers,embracing the inner hning and its rib, forms a swivel joint and as the hand wheel L is turned, the screw threaded shank m projects the inner lining and its rib e inwardly or pulls it out according to the direction of-the rotation.

The bottom end -of the cylinder, see Fig. f

1, is closed by a vertically adjust-able base plate H equal-to the cross section of the cylinder. This plate has around itscircumferential edge a packing ring or gasket itting tightly against the lower rabbeted edge of a cast metal ring R riveted to the-lower edge of the cylinder and the lower edge of which ring has an off setting flange in which is arranged a series of 'vertical bolts form ing thejfulcrums of a series ofcam-hegded lock levers Z) which are arranged to be swung under the edge ofthe base plate H to draw it up tightly to the'cylinder, or be turned out cylinder.

perforated false bottom t' mounted upon the of the way to allow the base'plate Hto be lowered in discharging the contents of the The base plate H has an 4inner tops of ribs 71, so as to leave aspace between the plate'H and the false bottom which isin open communication through the false bottom t' with the lwerend of the perforated central tube F and theannular space around the lining. lThe base plate H is mounted upon, and vertically adjusted bodily by, a hydraulic jack J supplied by a pipe c and 'carried on the car I, or other form of lifting of the dotted lines in Fig. 1. and'the car with the-bottom plate may then be run from beneath the cylinder A to allow the discharge of its more or less solid contents.

P, Fig. 2, is a set of pipes tapped into the outer shell near the bottom and through which naphtha and steam are alternately allowed to enter as hereafter described the annular space between the inner lining and the outer shell and G, Fig. 1, is a circular perforated pipe'at the top resting uponthe upper rib a and also-adapted to introduce naphtha on top of the contents of the cylinder.N P1 Aisanother set of pipes at the bottom tapped through the cast iron base ring R, seetxFig. 6, in a plane between the false bottom and base'plate H and adapted to draw off the oil and grease which may collect there and through which also naphtha may be introduced.

The operation of my apparatus is as f ollows: The bottom of the cylinder being placed in position and'made tight, the cylinder is then filled with material through the charging-inlet B. -Naphtha is then pumped in through the pipes P and P1 at the bottom, which naphtha fills the annular space between the inner lining and the outer shell and also the space beneath the false bottom and passes also up through the central perforated pipe F. Naphtha is also pumped in through the circular perforated pipe G at the top, falling in a spray upon the material.

In this way naphtha is allowed to penetrate the material in all directions tovtho'roughly dissolve and extract the grease and oil. The liquid consisting of a solution of grease and oil in naphtha is then drawn olil by the pipes P1 from beneath the false bottom and the process is continued by. pumping naphtha through the perforated spray pipe G at the top and washing it down through the material, taking it out as before through the pipes P1 until there is no more grease or oil coming away with the naphtha. l

After the naphtha and grease are drained out as far as possible, steam is introduced into the apparatus through the samepipes which formerly carried the naphtha and a vwall of steam encircles the material between the inner and outer shell and between the false bottom and bottom plate'and passin through the perforations -in the inner she permeates every part of the material. The large central perforated pipe F now comes into service. This pipe at-its upper end extends to la condenser. The steam rapidly evaporates any naphthal remaining in the material and it passes out through the perforated pipe F to the condenser to bel used again. The perforated pipe as well as the false bottom and the inner shell'act as strainers and prevent any solid material from going out with the steam and naphtha. When the'naphtha is all `drawn off by this process, which is called steaming out the fastening devices I) at the bottom are loosened and the bottom H lowered vby the hydraulic jack and the car is then run out on the rails from beneath the apparatus, and the contents of the cylinder dumped. The purpose and object of the inward adjustment of the inner perforated lining1 will now be made clear.

The semi-solid matters during the percolathe bottom discharge door is opened, the inner perforated lining is made in four segments with slip ljoints, so as to readily move inward and being secured atthe top andloose'at the bottom, said lining sections are pressed inward to contract the cross sectional area, thus compressing the material and holding it suspended while the bottom dis-.

charge door-y isbeing removed. After the bottom door is lowered vertically and carri'ed away horizontally on the car or truck tween the material said lining sections are then immediately drawn out again which breaks the bond beshell or strainer and allows the material to drop down and be removed in a simple and expeditious manner. Y

The important results of my invention are to be found in the means for discharging the tank by the integral vert-ical movement of the removable bottom and its bodily transfer horizontally to a. different place on a car, by which the full charge is allowed to quickly drop; the means for the expansion and contraction of the inner perforated lining to hold the semi-solid materials temporarily Suspended and also to break the" bond and facilitate the discharge of thematerial from gravity and thel construction for securing a thorough permeation of all parts of the material in the cylinder with the naphtha, and the draining out of the same, aswell as the means for the complete steaming out for driving the balance of the solvent out of the material. l

The chief ditliculty with naphtha extraction has been the danger connected' with it and the slowness of the operation. My invention is characterized by great thoroughness and rapidityof operation and safe manipulation.

I claim.

l. An apparatus of the kind described, comprising an upright container having a detachable bottom equal to the cross section of the container, a perforated strainer lining c `off-set from the side walls of the container and adjusting devices for forcing the per' forat'ed lining inwardly and drawing it out again to-break the bond between the strainer and the material within the same, the perforated strainer lining being 'connected to the container `at its upper end and being free to move inwardly below said connect-ion.

2. An apparatus of thel kind described, comprising an upright container having a detachable bottom equal to the cross section of the container, a perforated strainer lining off-set from the sidewalls of the container and adjusting devices for forcing the perforated lining inwardly and drawing it out again to break the bond between the strainer and the material within the same, the perfor-ated strainer being made in separate vertical sections.

and inner perforated 3. An apparatus of the kind described, comprising an upright container having a detachable bottom equal to the cross section of the container, a perforated strainer lining off-set from the side walls of the container. and adj usting' devices 'for forcing the per-V forated lining inwardly and drawing it out again to break the bond between the strainer andthe material within the same, the perforated strainer being made in separate vertical sections in the form of cylindrical segments connected along their vertical edges by slip joints.

4. An apparatus of the kind described comprising an upright container, a removable bottom equal to the cross scctionof the container, a perforated lining made in vertical sections having ribs'on their outer sides to reinforce the same and space the lining `away fromthe container and adjusting deviccsfor forcing the liningv sections into reinforce the same and space the lining away fromthecontainer and adjusting devices for forcing the lining secticins inwardly, said adjusting devices being made to operate upon the ribs of the lining.v

6. An apparatus of vthe kind described, comprising an upright container, a removable bottom equal to the cross section of the container, a perforated lining made in vertical sections having ribs on their outer sides to reinforce the same' and space the lining away from the container and adjusting de` vices for forcing the lining sections inwardly said adjusting devices being made -to operate upon the ribs of thelining and consisting of screw stems having turning handles on the outside and a swiveling connection with the lining sections.

7. An apparatus` of the kind described, comprising a vertical container, a perfo-Y rated lining off-set from the vertical walls, a detachable bottom equal to the cross section of the container having a perforatedv false bottom, a central vertical perforated pipe lio extending through the body of the container and out through the top of the container to carry oft' the vaporized solvent and inlet and outlet pipes communicating with the space around the lining and the space below the false bottom.

8. An apparatus of the kind described;``

comprising a vertical container, having an.

inner perforated lining, means for forcing..

the lining inwardly/ and drawing it out, a detachable bottom equal to the cross section of the container, a' wh'eeledcar with track below the bottom 'and lifting devices on the car connected to and carrying the det-achinner perforated lining, means for forcing" the lining inwardly and drawing it out, a detachablebottom equal to the cross section of the container, a wheeled car with tracks below the bottom and lifting devices on the ear connected to and carrying the detachable bottom and adjusting it bodily in both a vertical and horizont-al pla-ne, and locking devices for connecting the edges of the bottom to the lower edge of the container. v

l0. An apparatus of the kind described, comprising a vertical container, 'having an inner-perforated lining, means for forcing the lining inwardly and drawing it out, a detachable bottom equal to the cross section of the container, a wheeled car with track below the bottom and lifting devices on the car connected to and carrying the detachable bottom and adjusting it bodily in both a vertical and horizontal plane, said lifting devices consisting of a hydraulic jack with vertical guides.

11. An apparatus of the kind described,

consisting of an upright container having the full cross section of its lower end open, a detachable bottom therefor, a perforated 'lining for the container made contractible at its lower end a car carrying Yliftinof devices for said detachable bottom an varranged to move said bottom both vertically and horizontally. 1

12. An apparatus of the kind described, consisting of an upright container having the full cross section of its lower end open, a detachable bottom therefor, a perforated lining for the container made contractible at its lower end a car carrying lifting devices for said detachable bottom and arranged to move said bottom both vertically and horizontally. and a series of separate locking devices yfor tightening the joint between the lower edges of the container and the detachable bottom.

In testimony whereof I aiiX my signature in presence of two witnesses.

CHARLES EDGERTON.'

,Witnesses JOHN B. HENiinLs, CHRISTIAN Preirrnn. 

